forked from KolibriOS/kolibrios
532 lines
13 KiB
NASM
532 lines
13 KiB
NASM
; Search Additional Partition for KolibriOS applications
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;
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; Copyright (c) 2013, Marat Zakiyanov aka Mario79, aka Mario
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; All rights reserved.
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;
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; Redistribution and use in source and binary forms, with or without
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; modification, are permitted provided that the following conditions are met:
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; * Redistributions of source code must retain the above copyright
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; notice, this list of conditions and the following disclaimer.
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; * Redistributions in binary form must reproduce the above copyright
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; notice, this list of conditions and the following disclaimer in the
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; documentation and/or other materials provided with the distribution.
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; * Neither the name of the <organization> nor the
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; names of its contributors may be used to endorse or promote products
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; derived from this software without specific prior written permission.
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;
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; THIS SOFTWARE IS PROVIDED BY Marat Zakiyanov ''AS IS'' AND ANY
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; EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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; WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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; DISCLAIMED. IN NO EVENT SHALL <copyright holder> BE LIABLE FOR ANY
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; DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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; (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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; ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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;*****************************************************************************
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use32
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org 0x0
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db 'MENUET01'
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dd 0x01
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dd START
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dd IM_END
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dd I_END
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dd stacktop
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dd 0x0
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dd 0x0
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;---------------------------------------------------------------------
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fileinfo:
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.subfunction dd 5
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.Offset dd 0
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.Offset_1 dd 0
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.size dd 0
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.return dd folder_data
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db 0
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.name: dd basic_file_path
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;---------------------------------------------------------------------
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read_folder:
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.subfunction dd 1
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.start dd 0
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.flags dd 0
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.size dd 32
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.return dd folder_data
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db 0
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.name: dd read_folder_name
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;---------------------------------------------------------------------
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read_folder_1:
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.subfunction dd 1
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.start dd 0
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.flags dd 0
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.size dd 32
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.return dd folder_data_1
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db 0
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.name: dd read_folder_1_name
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;---------------------------------------------------------------------
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start_dir:
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db '/',0
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;-------------------------------------------------------------------------------
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basic_file_path:
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db '/rd/1/'
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basic_file_name:
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db 'kolibri.lbl',0
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additional_dir_name:
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db 'kolibrios',0
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real_additional_dir:
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db '/kolibrios',0
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;-------------------------------------------------------------------------------
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debug equ no ;yes
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include '../../macros.inc'
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if debug eq yes
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include '../../debug.inc'
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end if
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;-------------------------------------------------------------------------------
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START:
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mcall 5,500
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mov ebx,start_dir
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mov ax,[ebx]
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mov ebx,read_folder_name
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mov [ebx],ax
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mov ebx,read_folder_1_name
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mov [ebx],ax
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call device_detect_f70
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;--------------------------------------
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if debug eq yes
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call print_retrieved_devices_table
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dps 'get basic file'
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newline
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end if
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;--------------------------------------
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call load_file ; download the master file
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xor eax,eax
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cmp [fs_error],eax
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jne exit
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mov eax,[fileinfo.size]
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mov [basic_file_size],eax
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call search_and_load_pointer_file_label
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;---------------------------------------------------------------------
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exit:
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;--------------------------------------
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if debug eq yes
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dps 'just exit'
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;newline
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; mov edx,read_folder_name
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; call debug_outstr
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;newline
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; mov edx,read_folder_1_name
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; call debug_outstr
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;newline
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end if
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;--------------------------------------
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mcall -1
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;---------------------------------------------------------------------
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device_detect_f70:
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;--------------------------------------
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if debug eq yes
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dps 'read_folder_name: '
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mov edx,read_folder_name
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call debug_outstr
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newline
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end if
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;--------------------------------------
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mcall 70,read_folder
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test eax,eax
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jz @f
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cmp eax,6
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je @f
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;--------------------------------------
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if debug eq yes
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dps 'read_folder_error'
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newline
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; mov edx,read_folder_name
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; call debug_outstr
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;newline
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end if
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;--------------------------------------
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jmp exit
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@@:
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;--------------------------------------
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if debug eq yes
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call print_root_dir
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end if
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;--------------------------------------
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mov [left_folder_block],ebx
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xor eax,eax
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mov [temp_counter_1],eax
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mov [retrieved_devices_table_counter],eax
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.start_temp_counter_1:
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imul esi,[temp_counter_1],304
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add esi,[read_folder.return]
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add esi,32+40
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call copy_folder_name_1
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;--------------------------------------
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if debug eq yes
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;dps 'read_folder_1_name: '
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; mov edx,read_folder_1_name
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; call debug_outstr
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;newline
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end if
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;--------------------------------------
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mcall 70,read_folder_1
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test eax,eax
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jz @f
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cmp eax,6
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je @f
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;--------------------------------------
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if debug eq yes
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dps 'read_folder_error_1'
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newline
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; mov edx,read_folder_1_name
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; call debug_outstr
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;newline
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end if
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;--------------------------------------
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jmp exit
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@@:
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mov eax,[read_folder_1.return]
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cmp [eax+4],dword 0
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je .continue
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mov [right_folder_block],ebx
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xor ebp,ebp
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.start_copy_device_patch:
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imul edi,[retrieved_devices_table_counter],10
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add edi,retrieved_devices_table
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mov [edi],byte '/'
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inc edi
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imul esi,[temp_counter_1],304
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add esi,[read_folder.return]
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add esi,32+40
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call proc_copy_patch
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imul esi,ebp,304
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add esi,[read_folder_1.return]
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add esi,32+40
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mov [edi-1],byte '/'
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call proc_copy_patch
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inc [retrieved_devices_table_counter]
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inc ebp
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cmp ebp,[right_folder_block]
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jb .start_copy_device_patch
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.continue:
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inc [temp_counter_1]
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mov eax,[temp_counter_1]
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cmp eax,[left_folder_block]
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jb .start_temp_counter_1
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mov esi,retrieved_devices_table+1
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call copy_folder_name
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mov esi,retrieved_devices_table+3
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xor ecx,ecx
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@@:
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add esi,8
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cld
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lodsw
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inc ecx
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cmp ecx,[retrieved_devices_table_counter]
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ja @f
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cmp ax,'hd'
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jne @r
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sub esi,2
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call copy_folder_name_1
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ret
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@@:
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mov esi,retrieved_devices_table+1
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call copy_folder_name_1
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ret
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;---------------------------------------------------------------------
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load_file:
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mov [fileinfo.subfunction],dword 5
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xor eax,eax
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mov [fileinfo.size],eax
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mov [fs_error],eax
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;--------------------------------------
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if debug eq yes
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dps 'get file info'
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newline
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end if
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;--------------------------------------
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mcall 68,1
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mcall 70,fileinfo
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mov [fs_error],eax
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test eax,eax
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jnz .file_error
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;--------------------------------------
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if debug eq yes
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dps 'file info ok'
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newline
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end if
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;--------------------------------------
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xor eax,eax
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mov [fileinfo.subfunction],eax ;dword 0
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mov eax,[fileinfo.return]
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mov ecx,[eax+32]
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;--------------------------------------
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if debug eq yes
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dps 'real file size: '
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dpd ecx
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newline
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end if
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;--------------------------------------
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test ecx,ecx
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jz .file_error
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mov eax,304*32+32 ; 9 Kb
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cmp ecx,eax
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jbe @f
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mov ecx,eax
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;-----------------------------------
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@@:
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mov [fileinfo.size],ecx
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;--------------------------------------
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if debug eq yes
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dps 'get file'
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newline
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end if
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;--------------------------------------
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mcall 68,1
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mcall 70,fileinfo
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mov [fs_error],eax
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test eax,eax
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jz @f
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; cmp eax,6
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; jne .file_error
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; xor eax,eax
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; mov [fs_error],eax
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; jmp @f
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;-----------------------------------
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.file_error:
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;--------------------------------------
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if debug eq yes
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dps 'read file - error!'
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newline
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end if
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;--------------------------------------
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ret
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;-----------------------------------
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@@:
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;--------------------------------------
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if debug eq yes
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dps 'read file corrected size: '
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dpd dword[fileinfo.size]
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newline
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end if
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;--------------------------------------
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ret
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;---------------------------------------------------------------------
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search_and_load_pointer_file_label:
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mov [fileinfo.return],dword folder_data_1
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mov ecx,[retrieved_devices_table_counter]
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dec ecx ; /rd/1/ no need to check
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mov [fileinfo.name],dword read_folder_name
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mov esi,retrieved_devices_table
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; sub esi,10 ; deleted because /rd/1/ no need to check
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.next_entry:
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;--------------------------------------
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if debug eq yes
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newline
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dps 'copy next entry'
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newline
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end if
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;--------------------------------------
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add esi,10
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push esi
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add esi,1
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call copy_folder_name
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mov esi,basic_file_name-1
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dec edi
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call copy_folder_name.1
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pop esi
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;--------------------------------------
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if debug eq yes
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mov edx,[fileinfo.name]
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push ecx
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call debug_outstr
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pop ecx
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newline
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end if
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;--------------------------------------
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; mcall 5,10
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push ecx
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call load_file
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pop ecx
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xor eax,eax
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cmp [fs_error],eax
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jne @f
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mov eax,[fileinfo.size]
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cmp eax,[basic_file_size]
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jae .sucess
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@@:
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dec ecx
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jnz .next_entry
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;--------------------------------------
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if debug eq yes
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dps 'additional parttition is not found!'
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newline
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end if
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;--------------------------------------
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ret
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.sucess:
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call compare_files_and_mount
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cmp [compare_flag],byte 0
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jne @b
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ret
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;---------------------------------------------------------------------
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compare_files_and_mount:
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push ecx esi
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mov ecx,[basic_file_size]
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mov esi,folder_data
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mov edi,folder_data_1
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.next_char:
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cld
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lodsb
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mov ah,[edi]
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inc edi
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cmp al,ah
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jne .not_match
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dec ecx
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jnz .next_char
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mov [compare_flag],byte 0
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pop esi ecx
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;--------------------------------------
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if debug eq yes
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dps 'compare files sucess!'
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newline
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dps 'mount directory:'
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newline
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mov edx,esi
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push esi
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call debug_outstr
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pop esi
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newline
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end if
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;--------------------------------------
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; prepare real directory path for mounting
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inc esi
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mov edi,f30_3_work_area+64
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call proc_copy_patch
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dec edi
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mov esi,real_additional_dir
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call proc_copy_patch
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; prepare fake directory name
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mov esi,additional_dir_name
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mov edi,f30_3_work_area
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call proc_copy_patch
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; here is call kernel function to mount the found partition
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; as "/kolibrios" directory to root directory "/"
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mcall 30,3,f30_3_work_area
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ret
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;--------------------------------------
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.not_match:
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mov [compare_flag],byte 1
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pop esi ecx
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;--------------------------------------
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if debug eq yes
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dps 'compare files is not match!'
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newline
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end if
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;--------------------------------------
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ret
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;---------------------------------------------------------------------
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copy_folder_name:
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mov edi,read_folder_name+1
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.1:
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proc_copy_patch:
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cld
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@@:
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lodsb
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stosb
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test al,al
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jnz @r
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ret
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;---------------------------------------------------------------------
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copy_folder_name_1:
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mov edi,read_folder_1_name+1
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jmp proc_copy_patch
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;---------------------------------------------------------------------
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if debug eq yes
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print_retrieved_devices_table:
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mov ecx,[retrieved_devices_table_counter]
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mov edx,retrieved_devices_table
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dps 'retrieved_devices_table:'
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newline
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dps '----------'
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newline
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@@:
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push ecx edx
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call debug_outstr
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newline
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pop edx ecx
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add edx,10
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dec ecx
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jnz @b
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newline
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dps '----------'
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newline
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ret
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;---------------------------------------------------------------------
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print_root_dir:
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dps '----------'
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dps 'root dir:'
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dps '----------'
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newline
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pusha
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mov ecx,ebx
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mov edx,folder_data+32+40
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@@:
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push ecx edx
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call debug_outstr
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newline
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pop edx ecx
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add edx,304
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dec ecx
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jnz @b
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popa
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newline
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dps '----------'
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newline
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ret
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end if
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;-------------------------------------------------------------------------------
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IM_END:
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;-------------------------------------------------------------------------------
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align 4
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left_folder_block rd 1
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right_folder_block rd 1
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temp_counter_1 rd 1
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retrieved_devices_table_counter rd 1
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basic_file_size rd 1
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fs_error rd 1
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compare_flag rb 1
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;-------------------------------------------------------------------------------
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align 4
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f30_3_work_area:
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rb 128
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;-------------------------------------------------------------------------------
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align 4
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retrieved_devices_table:
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rb 10*100
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;-------------------------------------------------------------------------------
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align 4
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read_folder_name:
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rb 256
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;-------------------------------------------------------------------------------
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align 4
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read_folder_1_name:
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rb 256
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;-------------------------------------------------------------------------------
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align 4
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folder_data:
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rb 304*32+32 ; 9 Kb
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;-------------------------------------------------------------------------------
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align 4
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folder_data_1:
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rb 304*32+32 ; 9 Kb
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;-------------------------------------------------------------------------------
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align 4
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rb 512
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stacktop:
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;-------------------------------------------------------------------------------
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I_END:
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;------------------------------------------------------------------------------- |